(CNN) - Last week a video of Hamas spokesman Osama Hamdan emerged in which he claimed that Jews use the blood of non-Jewish children to make matzo for Passover.

The translation of Hamdan’s interview with the Lebanese television station Al-Quds on July 28 reports him as saying:

We all remember how the Jews used to slaughter Christians, in order to mix their blood in their holy matzos. This is not a figment of imagination or something taken from a film. It is a fact, acknowledged by their own books and by historical evidence. It happened everywhere, here and there.

When confronted about his statements by CNN's Wolf Blitzer on Monday, Hamdan did not retract his claim or distance himself from the blood libel slur. His only defense was that he “has Jewish friends.”

Whatever “historical evidence” or “facts” Hamdan believes himself to be remembering, this is nothing more than the infamous blood libel: the most persistent and longest-lived anti-Semitic myth in history, aside from the claim that the Jews killed Jesus.

The blood libel originated in medieval England with the death of William of Norwich. William was a 12-year-old tanner’s apprentice who was killed in 1144. At the time of his death, his parents accused the local Jewish community of responsibility, but investigations revealed nothing.

(CNN) - It is understandable why Breanna Mitchell’s sunny tweet from Auschwitz as “PrincessBMM” would spark a viral outcry.

A tour of a concentration camp, where so many Jews lost their lives, may move us to take photos or post responses - but few would include smiles, or selfies.

But Mitchell is not the first teenager to generate Internet outrage by her response to the Holocaust.

When Justin Bieber visited the Anne Frank House last year, he wrote in the museum guest book, “Truly inspiring to be able to come here. Anne was a great girl. Hopefully, she would have been a Belieber.”

While many have ripped into Mitchell and Bieber for their insensitivity, I don’t think they intended to be disrespectful to the dead.

Thanks to the ubiquity of mobile devices (mobiquity!), adolescent mistakes and hard lessons that used to be learned in private can quickly devolve into public drubbings.

This is what happens when new technologies clash with ancient understandings of the sacred. The problem is so pervasive that a Tumblr site, “Selfies at Serious Places” is dedicated to such faux pas.

We have very few spaces that our culture considers sacred, where an association with the divine results in a feeling of awe or reverence. Death may seem especially abstract to young people who haven’t been shown how to grieve, mourn or respect the dead.

So how might we help the emerging generation to develop a digital decorum that accounts for sacred spaces? Can we incorporate electronic ethics into religious instruction?

(CNN) - Leon Gersten could not bear to watch “Schindler’s List,” the movie about Czech industrialist Oskar Schindler who saved 1,200 Jews from Nazi extermination camps. It was too painful for the Holocaust survivor, too close to reality.

But now, almost 70 years after his village in Poland was liberated by the Soviet army, Gersten is meeting the man who is the Oskar Schindler of his own life: Czeslaw Polziec.

Like Schindler, Polziec is Catholic. His family secretly sheltered Gersten in rural Poland for two years during World War II.

As though such a reunion between survivor and rescuer were not emotional enough, this one is taking place Wednesday on the eve of Hanukkah, which coincides this year with Thanksgiving. Two celebrations of gratitude.

(CNN) - Marking a sharp shift from his Holocaust-denying predecessor, new Iranian President Hassan Rouhani on Wednesday appeared to wish "all Jews" a "blessed Rosh Hashanah" on his English-language Twitter account.

Editor’s Note: Today marks the 20th anniversary of the U.S. Holocaust Memorial Museum. It was Elie Wiesel’s idea to make this an institution of learning rather than a simple memorial. Michael Schulder, host of the "CNN Profiles" radio show, sat down with Wiesel to talk about a range of issues, including how a sense of humor survives in so many survivors. This story, though, is about faith.

By Michael Schulder, CNN

(CNN) – “They called him Moishe the Beadle, as if his entire life he had never had a surname.”

This is the opening line of the most widely read memoir of the Holocaust, Elie Wiesel’s "Night."

I had the opportunity to ask Wiesel about Moishe the Beadle recently when we sat down for an in-depth CNN Profile, which you can listen to here.

When Wiesel won the Nobel Peace Prize, the committee that chose him called him a messenger to mankind.

(CNN) – School officials in Albany, New York, are racing to control the damage after a teacher at Albany High School gave students a persuasive writing assignment that challenged them to defend the proposition that “Jews are evil.”

After studying Nazi propaganda and rhetoric, sophomores in three English classes were instructed to imagine that their teacher was “a member of the government in Nazi Germany” and to prove that that they were “loyal to the Nazis.”

But this unidentified teacher is now caught up in a propaganda swirl of his or her own.

At age 108, Alice Herz-Sommers is the world's oldest survivor of the Holocaust. She was imprisoned at Theresienstadt, which was conceived by Hitler as a "model" concentration camp.

Herz-Sommers - Alice, as I know her - is a pianist. In between summer 1943 and the camp's liberation at the end of the war, she played more than 100 concerts at Theresienstadt. Most were solo recitals culled from memory from her extensive repertoire. She has survived for more than a century with a profound faith in humanity intact and a smile on her face.

As music is her kind of prayer, Alice still practices piano - Bach, Beethoven, Schubert – for three hours every day.

I got to know her in London, where she now lives, through mutual friends who are musicians, historians and Holocaust survivors. For Holocaust Remembrance Day, here are 7 lessons she has taught me:

The CNN Belief Blog covers the faith angles of the day's biggest stories, from breaking news to politics to entertainment, fostering a global conversation about the role of religion and belief in readers' lives. It's edited by CNN's Daniel Burke with contributions from Eric Marrapodi and CNN's worldwide news gathering team.